Tracer.



Patented Feb. |9, |9ol.

(No Model.)

W/ TNE SSE S we cams FIL-rens co.. me'umo.. wunmarou. r:A a

- line 2 2 in Fig. l.

Nirnn rares HENRY M. ENRIGHT, OF NEW YORK, N. Y.

TRACER.

SPECIFICATION forming part of Letters Patent No. 668,506, dated February 19, 1901.

Application filed October Z4., 1900. Serial No. 34,172. (No model.)

city of New York, borough of Manhattan, in'

the county and State of New York, have invented a new and Improved Tracer, of which the following is a full, clear, and exact description.

The object of-the invention is to provide a new and improved marker or tracer which is simple and durable in construction and arranged to permit of folding and inclosing the tracer-Wheel, so that the device may be conveniently carried in a pocket without danger of tearing the pocket material by the sharp teeth of the tracer-wheel.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of thisspeciiication, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a perspective view of the improvement with parts in position for use. Fig. 2 is a transverse section of the same -on the Fig. 3 is a perspective View of the improvement with the parts folded up and the tracer-wheel inclosed, and Fig. 4 is a transverse section of the same on the line 4 4 in Fig. 3.

The improved marker or tracer consists, essentially, of a tracer-wheel A, mounted to turn on a pivot B, screwed in the forked end of a shank C, the lower portion of the tracerwheel extending beyond the lower end of said shank, as is plainly indicated in Figs. l and 2. On the upper end of the shank Ouand on opposite sides thereof are arranged hinges D D, connected with plates E E', adapted to befastened together at their free ends by a catch F, hinged to the plate E and engaging the other plate E. The plates E E when in the position shown in Figs. l and 2 form an extension or handle for the shank C, so that the tool can-be conveniently taken hold of by the operator to run the tracer-wheel A over the surface to be marked.

When it is desired to carry the tool in a pocket, the operator swings the catch F open,

and thereby disengages the plate E, and then the two plates E E are swung around in opposite directions to inclose the shank C, with the tracer-wheel A, between the said plates, as is plainly indicated in Figs. 3 and 4, the plates being then fastened at their free ends by the catch F.

When the tracer is folded, as described, the shank C, and with it the tracer-Wheel A, is completely inclosed between the said plates, so that the sharp teeth of the tracer-wheel are not liable to tear the pocket or injure the hand when the tool is not in use.

The shape given to the shank and plates is such that when the plates are extended, as shown in Figs. l and 2, said plates form an extension of the shank C to allow a ready hold on the tool by the operator and to give the tool a nice appearance.

The tracer-wheel A is preferably arranged in the forked end of the shank C so that only the lower portion of the wheel projects beyond the said shank, and consequently the portion of the Wheel not in use at the time is completely out of the way and not liable to injure the lingers by which the shank C is taken hold of at the time the tool is in use.

Having thus fully described my invention, l claim as new and desire to secure by Letters Patentl. A tracer, comprising a tracer-wheel, a shank in one end of which the said tracerwheel is journaled, and plates hinged on opposite sides of the shank a't the end opposite the one carrying the said tracer-wheel, said plates being arranged to form a handle for the tracer and to inclose the said shank and tracer-Wheel between said plates, as set forth.

2. A tracer, comprising a tracer-wheel, a shank in one end of which the said tracerwheel is journaled, plates hinged on opposite sides of the shank at the end opposite the one carrying the said tracer-wheel, said plates being arranged to form a handle for the tracer and to inclose the said shank and tracer-wheel` between said plates, and a lock for locking the freeends of said plates when the latter are in either an extended or folded position, as set forth.

3. A tracer, comprising a shank having a forked end, a pivot screwing in said forked end, a tracer-wheel journaled on said pivot be- IOO tween the members of the forked end, hinges name to this specification in the presence of on opposite sides of said shank, plates engaged two subscribing witnesses` by said hinges, and a catch pivoted on one of said plates and arranged to engage one plate 5 and look said plates in either an extended or Witnesses:

folded position, as set forth. J. O. MADISON,

In testimony whereof I have signed my M. FITZ GERALD.

HENRY M. ENRIGHT. 

